Add per lambda IAM to config

lambdas/scale_out_runner/.chalice/config.json

diff --git a/lambdas/scale_out_runner/.chalice/config.json b/lambdas/scale_out_runner/.chalice/config.json
index bd29d8c..89efd5f 100644
--- a/lambdas/scale_out_runner/.chalice/config.json
+++ b/lambdas/scale_out_runner/.chalice/config.json
@@ -8,10 +8,13 @@
     "prod": {
       "api_gateway_stage": "api",
       "autogen_policy": false,
-      "iam_policy_file": "prod_iam.json",
       "environment_variables": {
         "GH_WEBHOOK_TOKEN_ENCRYPTED": "AQICAHg1MGVq8MAqYXSkkgy6iL19KSI14nJw8DelmHFuRpAfvQEh/mniWicOD0N1aVuHhp+VAAAAfDB6BgkqhkiG9w0BBwagbTBrAgEAMGYGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMVqkAu70BaR2rDQ4qAgEQgDlIAxDrBlblL6XNKkJIs+zrNEMcGpS68JnoVh2s1oKEzbBXzYS16/9ZrW9CwUV4ULAd2EsGb90iz74=",
         "ACTIONS_SQS_URL": "https://sqs.eu-central-1.amazonaws.com/827901512104/actions-runner-requests"
+      },
+      "lambda_functions": {
+        "index": { "iam_policy_file": "prod/index.json" },
+        "sync_committers": { "iam_policy_file": "prod/sync_committers.json" }
       }
     }
   },

lambdas/scale_out_runner/.chalice/prod/index.json

diff --git a/lambdas/scale_out_runner/.chalice/prod_iam.json b/lambdas/scale_out_runner/.chalice/prod/index.json
similarity index 92%
rename from lambdas/scale_out_runner/.chalice/prod_iam.json
rename to lambdas/scale_out_runner/.chalice/prod/index.json
index 539bac3..c7b4fe3 100644
--- a/lambdas/scale_out_runner/.chalice/prod_iam.json
+++ b/lambdas/scale_out_runner/.chalice/prod/index.json
@@ -2,7 +2,7 @@
     "Version": "2012-10-17",
     "Statement": [
         {
-            "Sid": "VisualEditor0",
+            "Sid": "ScaleOutRunner",
             "Effect": "Allow",
             "Action": [
                 "logs:CreateLogStream",
@@ -22,7 +22,7 @@
             ]
         },
         {
-            "Sid": "VisualEditor1",
+            "Sid": "ScaleOutRunner",
             "Effect": "Allow",
             "Action": [
                 "autoscaling:DescribeAutoScalingGroups"

lambdas/scale_out_runner/.chalice/prod/sync_committers.json

diff --git a/lambdas/scale_out_runner/.chalice/prod/sync_committers.json b/lambdas/scale_out_runner/.chalice/prod/sync_committers.json
new file mode 100644
index 0000000..351e590
--- /dev/null
+++ b/lambdas/scale_out_runner/.chalice/prod/sync_committers.json
@@ -0,0 +1,24 @@
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Sid": "SyncCommitters",
+      "Effect": "Allow",
+      "Action": [
+        "kms:Decrypt",
+        "kms:Encrypt",
+        "kms:GenerateDataKey",
+        "ssm:GetParameter",
+        "ssm:PutParameter",
+        "logs:CreateLogStream",
+        "logs:CreateLogGroup",
+        "logs:PutLogEvents"
+      ],
+      "Resource": [
+        "arn:aws:ssm:*:827901512104:parameter/runners/*/configOverlay",
+        "arn:aws:kms:*:827901512104:key/48a58710-7ac6-4f88-995f-758a6a450faa",
+        "arn:*:logs:*:*:*"
+      ]
+    }
+  ]
+}